anonymous
  • anonymous
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Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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anonymous
  • anonymous
A rectangle has sides measuring (4x + 5) units and (3x + 10) units. Part A: What is the expression that represents the area of the rectangle? Show your work to receive full credit. (4 points) Part B: What are the degree and classification of the expression obtained in Part A? (3 points) Part C: How does Part A demonstrate the closure property for polynomials? (3 points)
anonymous
  • anonymous
(4x+5)(3x+10) DO YOU KNOW FOIL?
anonymous
  • anonymous
yes

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anonymous
  • anonymous
cool, do it
anonymous
  • anonymous
I need help
anonymous
  • anonymous
ok so 12x^2 + 40x + 15x + 50
anonymous
  • anonymous
What about that?
anonymous
  • anonymous
do you get how I used foil to get that?
anonymous
  • anonymous
Not really... for area dont you just multiply the two together
anonymous
  • anonymous
When I multiplied the two together I got 12x^2+55x+50
anonymous
  • anonymous
@twistnflip
anonymous
  • anonymous
perfect
anonymous
  • anonymous
This is the expression for part a
anonymous
  • anonymous
Oh ok so for part b...
anonymous
  • anonymous
Well the degree is the highest exponent, so 2 and classification I would assume quadratic, what classification do they want you to do. What did you learn
anonymous
  • anonymous
I think it would be a polynomial degree of 2 because thats what we are learning about
anonymous
  • anonymous
so part c...
anonymous
  • anonymous
perfect. now part c do you know what closure is?
anonymous
  • anonymous
No
anonymous
  • anonymous
Sounds familiar

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